Means for attaching safety-wheels to car-axles.



J. T. ANDREW.

MEANS FOR ATTAOHING SAFETY WHEELS T0 CAR AXLES.

APPLICATION FILED JULY 6, 1912.

Patented Nov. 5, 1912.

COLUMBIA FLANDGRAPH co.. WASHINGTON, D c.

JAMES T. ANDREW, or MONTGOMERY, ALABAMA.

MEANS FOR ATTACHING SAFETY-WHEELS TO CAR-AXLES.

Specification of Letters Patent.

Patented Nov. 5, 1912.

Application filed July 6, 1912. Serial No. 708,046.

To all whom it may concern:

Be it known that I, JAMEs T. ANDREW, a citizen of the United States,residing at Montgomery, in the county of Montgomery and State ofAlabama, have invented certain new and useful Improvements in Means forAttaching Safety-Wheels to Car-Axles; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

This invention relates to means for attaching safety wheels to caraxles, and has for its object to further improve the means disclosed inmy U. S. Patent No. 985,650, dated February 28, 1911.

To these ends the invention consists in the novel details ofconstruction and co1nbinations of parts more fully hereinafter disclosedand particularly pointed out in the claims.

Referring to the accompanying drawings forming a part of thisspecification in which like numerals designate like parts in all theviews :Figure 1 is a view partly in elevation and partly in sectionillustrating a portion of a car-truck provided with my invention; Fig. 2is a cross sectional View taken on the line 22 of Fig. 1; and Fig. 3 isa cross sectional view taken on the line 33 of Fig. 1.

1 indicates the rail, 2 the usual wheel of a car-truck, 3 the axlethereof, and 4 a portion of the truck framework. 011 the outside of eachwheel 2 I provide the safety rollers 5 as in my former patent above, andon the inside of each wheel I provide the safety wheels 6 locatedsubstantially as in my said patent. Instead of securing said safetywheels to the car axle, as is disclosed in my said patent, however, inthis invention I provide the said wheels 6 with a projecting portion 7adapted to extend into the hollow 8 of the car wheels 2 and to becomefirmly locked in the hollows of said wheels by the means now to bedescribed. That is to say, the said wheels 6 are provided with thesleeves 9 having the bevels 10 to which are fitted the correspondinglybeveled collar 11 having the abrupt shoulder 12 as shown. The saidcollar 11 is of the proper dimensions to fit between the inner ends ofthe sleeves 9 when the projections 7 of the wheels 6 are snugly fittedinto the hollows 8 of the car wheels 2, and therefore said collar 11serves as a key or a lock for the said wheels 6, and firmly holds themin place.

. The wheels 6 as well as the sleeves 9 and collar 11 are preferablydivided longitudinally into two parts as shown, and the said parts arefirmly bolted together by the bolts 13, or other means.

l/Vhen assembling the parts the half sectlons of the safety wheels andsleeves are fitted to the axle, and the bolts 13 are putinto place. Thesaid wheels 6 are thereupon fitted as closely as possible to the wheels2, whereupon the bolts 14 of the collar 11 are set up, and the partsjarred, or otherwise forced into place until the shoulders 12 of thecollar 11 seat against the extreme ends of the sleeves 9 and therebyform an efficient lock. The beveled members 10 of the sleeves 9 alsoenable the collar 11v to act as a wedge in forcing the parts together.

As is made clear from my patent above, when a car equipped with myinvention leaves the track, the weight thereof is caught upon therollers 5 on one side of the truck and upon the safety wheels 6 upon theother side of the truck, and of course, since the weight is enormous,there is a greater or less jar or shock when the rollers 5 and safetywheels 6 are received upon the track rails.

lVit-h the construction now disclosed, however, the wheels 6 are firmlybraced by the regular wheels 2 as well as by the axle, and the strainwhich the above shock produces is taken by the axle near the wheel 2,and therefore, the said shock is taken up by the axle precisely as ifthe ordinary wheel 2 of the car had run over a stone or otherobstruction.

What I claim is 1. In a safety appliance for railway trucks, thecombination of a car axle; a wheel provided with a hollow in its side,on said axle; a safety wheel on said axle provided with a projectionadapted to enter said hollow; and means comprising a di vided sleeve anda collar secured to said axle for securing said safety wheel on saidaxle with its projection in said hollow, substantially as described.

2. In a safety appliance for railway trucks, the combination of a caraxle; a wheel provided with a hollow in its side on said axle; a safetywheel made in a plurality of parts bolted together on said axle providedwith a projection adapted to enter said hollow; and means comprising acollar st-antially as described.

l. In a safety appliance for railway trucks the combination of a caraxle; a pair of car wheels thereon having hollow faces; a pair of safetywheels located beside said car wheels, each having a projection enteringa face of said car wheels, each having a sleeve made in two parts boltedon said axle, and said sleeves being shorter than the space between saidsafety wheels; and a collar on said axle between said sleeves serving tolock said safety wheels in place, substantially as described.

JAMES T. ANDREW.

Witnesses T. A. ITHERSPOON, R. N, PARKER.

Copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents, Washington, D. C.

